small, shallow lake in northern New Zealand, located 30 kilometres to the east of Rotorua. It is immediately south of the active volcano Mount Tarawera, and its geography was substantially altered by the 1886 eruption. The lake covers a surface area of 7.4 square kilometres. Lake Rotokakahi (Green Lake) Lake Rotokakahi or Green Lake, is one of four small lakes lying between Lake Rotorua and Lake Tarawera in the Bay of Plenty region of New Zealand's North Island. The others are Lake Tikitapu (Blue Lake), Lake Okareka, and Lake Okataina. Named by the Māori for its abundance of shellfish, it flows to Lake Tarawera via the Te Wairoa waterfalls. It appears emerald green from the air due to its shallow, sandy bottom. The lake is 1302 feet above sea level and 69 feet below the level of the neighbouring Lake Tikitapu. The lake is largely undisturbed due to no nearby roads or towns. The lake covers a surface area of 4.5 square kilometres. Lake Okareka Lake Okareka is one of four small lakes lying between Lake Rotorua and Lake Tarawera, in the Bay of Plenty region of New Zealand's North Island. The others are Lake Rotokakahi (Green Lake), Lake Tikitapu (Blue Lake), and Lake Okataina. This lake has an adjacent settlement of approximately 600 people. The lake covers a surface area of 3.5 square kilometres. Lake Tikitapu (Blue Lake) Lake Tikitapu or Blue Lake, is the smallest of four small lakes lying between Lake Rotorua and Lake Tarawera in the Bay of Plenty region of New Zealand's North Island. The others are Lake Rotokakahi (Green Lake), Lake Okareka, and Lake Okataina. Along with the others, Lake Tikitapu lies within a volcanic caldera formed within the last 300,000 years. The blue colour of the lake can be attributed to rhyolite and pumice on the lake bed. The lake has no visible outlet, however subsurface flow drains towards Lake Tarawera. The lake has a surface area of 1.4 square kilometres. References Rotorua Lakes District Rotorua Rotorua